In the new camera raw there is very annoying inconsistency in behavior between different tools and going to next photo.
e.g. - in the "main panel tool" you can use Ctrl+arrow or alt+arrow for go to next photo. In crop tool alt+arrow moves the photo in crop and for next image works only Ctrl+arrow. But with the spot healing tool Ctrl+arrow is used for moving active healing spot and alt+arrow for next image.
Why? Very annoying.